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January 5th, 2007, 11:36 PM
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missing gas cap - what will it affect
Hi all
this is for my winter beater 90 4runner. I failed my local emissions test early this week, and I notice I was missing my gas cap when I went to fill the tank tonite. The garage mentioned that they had to clean the filler neck because of rust & I think they forgot to put the gas cap back on... to perform the emissions test!!!! Filler neck looks clean!!!! Does anyone know what a missing gas cap will affect (HC, COs NOX). I failed miserably on NOX thanks... dave
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(87 GN - stock 20k 86 TType - accident prone 87 Limited - new toy-stock) Last edited by channer : January 5th, 2007 at 11:39 PM.     
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January 6th, 2007, 08:17 AM
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I do not know what emissions that would affect, but in Ca it is part of the functional and visual test. It must be on the car and it must seal.
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TIA: Gary Wells / "TOLTK" '87 Buick Turbo Regal, 22K miles '02 Quicksilver Z06 Vette, 55K miles '98 Honda CBR1100XX, 1.2K miles Garage prostitutes, to the max
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January 20th, 2007, 01:59 AM
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Quote:
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'87 GN - Stage 1 block, forged bottom end, billet mains, TA Perf SI heads (14 bolt), Comp solid roller, 1.65 rockers, p/p stock intake, RJC pp, 62mm tb, ATR Dbl pmpr, 83lb inj, fmic, PT70, TA headers, 3" THDP, Hooker exhaust, Turbo Tweek chip 10.96 @ 123mph (101 gas & a FAT tune) "It's just a little ol V6" 
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January 20th, 2007, 08:28 PM
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What are the rest of the numbers? If your failing NOx miserably, you need to address EGR, fuel control, Ignition, combustion chamber carbon build up, cooling system and cat. Probably in that order.
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87 Buick GN 55 Chevy 3200 Heavy 1/2 Ton 99 Pontiac Bonneville Joe
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